Dibutyl phthalate (DBP), a plasticizer, has a potential market of 12 million Ib/yr (AIChE Student Contest Problem) and is to be produced by reaction of n-butanol with monobutyl phthalate (MBP). The reaction follows an elementary rate law and is catalyzed by H2 SO4 (Figure P 4-6 ). A stream containing MBP and butanol is to be mixed with the H2 SO4 catalyst immediately before the stream enters the reactor. The concentration of MBP in the stream entering the reactor is 0.2 tb mol / ft^3, and the mo

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